Authorities held a joint news conference with Anne Arundel County Public School officials Wednesday to discuss the circumstances involving North County High School.

Police said a school custodial employee noticed suspicious activity at the school around 1:45 p.m. Monday.

The employee told police he or she heard someone trying to enter the school in an area not normally used by visitors. The custodian used a school-based radio to call the School Resource Officer for help.

Officials said the SRO searched the school grounds and discovered that the man followed a school employee inside the building through a rear door near the school’s loading dock.

School officials who heard of the disturbance found the man -- identified as Justin Matthew Beaumont, 25, of Glen Burnie -- and escorted him to the school's office, where they found out he was a former student.

Authorities said Beaumont did not make any threats to harm anyone at the school, nor were any weapons found when they searched him; however, an empty handgun holster was found inside his car. No firearms or ammunition were present.

Beaumont told police he was subjected to bullying during his enrollment at the school, which school officials said was only for two months in 2002. He also asked about school security and referenced his previous military experience, police said.

Beaumont was charged with trespassing on posted property -- a misdemeanor offense -- and later released. But authorities said in light of recent school shootings, detectives investigated his activities before he went to the school.

"Post-Connecticut, we have got to recognize -- as an agency, as a nation and as a state -- that our schoolchildren -- we have to take these kinds of precautionary thorough investigative steps to make sure we do everything we can to make them safe," said police Lt. J.D. Batten.

Detectives learned Beaumont is a legally registered owner of several firearms. Based on the totality of the circumstances and the Mental Health Evaluation Article, detectives got a search warrant for Beaumont’s home and vehicle.

During the search, detectives said they recovered an AK-47 rifle under Beaumont’s bed that was loaded with a 30-round magazine. An Uzi was also found under Beaumont’s bed that wasn't loaded, police said.

Police said they also found two unloaded 8MM bolt-action rifles in a case under the bed, an unloaded Jennings .22-caliber handgun in a box under the bed, and a loaded Kel Tec .380 handgun equipped with a laser sight between the bed’s mattresses. A 9 mm barrel and silencer, along with ammunition and numerous ammunition magazines, were also recovered.

The weapons and materials were taken into police custody for safe-keeping pending additional investigation.

Beaumont is currently undergoing medical treatment at Sheppard's Pratt Health System after his bond was revoked. Police said he will remain in custody at a detention center after the evaluations are complete, and a judge will likely determine what's next for him and his weapons.

Following the incident, police and school officials said they are looking into security improvements at North County, even though schools Superintendent Kevin Maxwell said the county's schools are safe and that they drill for whatever scenarios may arise.

"There is always the possibility for human error or people to take advantage of opportunities, as in this case of somebody grabbing the door before it closes and someone gaining entry," Maxwell said.